Home / 685,461.24-1,030,016.70-642,366.45

Finding the Fourth Proportional to 685,461.24, 1,030,016.70 and 642,366.45

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Solution

The fourth proportional to 685,461.24, 1,030,016.70 and 642,366.45 is: 965,259.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,461.24 : 1,030,016.70 = 642,366.45 : x
  2. Step 2: Convert to fraction form
    685,461.24/1,030,016.70 = 642,366.45/x
  3. Step 3: Cross multiply
    685,461.24x = 1,030,016.70 × 642,366.45
  4. Step 4: Simplify right side
    685,461.24x = 661,648,171,019.72
  5. Step 5: Solve for x
    x = 661,648,171,019.72/685,461.24
  6. Step 6: Final answer
    x = 965,259.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.